Mixing apparatus for insecticides



J1me 1952 A. w. GUSTAFSON MIXING APPARATUS FOR INSECTICIDES 2SHEETS-SHEET 1 Filed July 25, 1950 INVENTOR ATTORNEY June 10, 1952 A. w.GUSTAFSON MIXING APPARATUS FOR INSECTICIDES Filed'July 25 1950 2 SHEETSSHEET 2 INVENTOR ATTORNEY Patented June 10, 1952 UNITED STATES EN *DFF2,599,825

- :MIXINGAPPARA'IUS Foemsbeneibbs August W.fGu st'afso n, corpus h 'iifi, Tex. l v Application luly 25, 1950, serial -ivmnsisii r e ponies.(01. 259 41) The present inventionrelates to abparatus ier I Idistributing an insecticide and more particularly pertains toeamechanismzfonmaintainingza quid insecticide or an insecticid'eifclimedlof powder and liquid in a state. of agitation ,and deli vering theliquidto one ormore spraying nozzles.

xAnxobject of the. invention is-to provide a drum fonreceiving theinsecticide and maintainingythe insecticide and liquidcarrier in aproperlymixed condition so that a substantiallynniform concentration ofinsecticide will be delivered to the a ;vegetation .of the like which isbeing treated,

, Afurther-object of. the invention isto-provide 'means adding air tothe rotating drum; as the liquid is withdrawn to3thereby facilitatethedis charge :of the insecticide. to, the spr ying nozzles. I

. Other objects and-,-features -ofthe invention will -.be appreciatedand apparent to those skilled in the .art -.upon a considerationof; thefollowing detailed description and the'accompanying drawings; wherein:anembodiment of the inventionis disclosed.

. .Referring-to the drawings there is shown at .10 the base of-a framefor supporting adrum I l .fortrotation, The drum ,II is adapted toreceive a liquid insecticide concentrate adapted to be mixed with aliquid carrier or an insecticide in 1 powder form which isadapted to ,bem ixed with wateror otherliquid. The drum] 1 is supported for rotationby a relatively large hollow shaft [2 which extends throughthedrumas'indicated byjthedotted lines in Fig. 1. The shaft l2=issupported by converging brackets .M which extend upwardly from -thebase, ll] of the; frame. Thepairs of brackets l4 are,=eachprovided with.p

a collar- I6 whichembracetheshaft 12 and prevent rotation thereofrelative to the frame.

The end wall 11 of the drum'carries a bearing I8 which may be secured tothe end wall by means of a flange 1 9. A plurality of rivets or the like2| extend through the flange I9 to thereby secure the bearing 18 to'thedrum II. A similar bearing 21 is provided at the other end of the drumwhich carries a flange 22. The flange 22 may be bolted or riveted to theend wall 23. The drum is supported'for, rotation on the shaft [2 bymeans of the bearings l8 and 2|.

The drum I l is provided with an opening 20 in the periphery thereofwhich is adapted to be closed and sealed by means of ajdoor 26. Theinseet'iei'd'e met rin -sea liduid e rner therefor'pareiiitroduc'edlinto thefdrum through the opening 21] when thledoo'r Z'Bisopen, A plurality bf paddles 21 v are provided inside thefdjr'u'i'n sothat nur mgretation thereof the-insecticide materials are miiied withwater 1 or other ,liquid gandl con'stantly agitat d while Ithedr imrotates.

he 'd'ru'rnll inayjb difivnin any suitable manner and in the'ei'nbojdirn'eht illustrated apli fral'ityof-beltsza are trained aboutthe periphery r thefl'drum 'lh'esekbeltsjnal'so extend around apulleyfshownegenerally at {3]. The pulley 3|,is provided with twogroovdportions for r'ece mg the belts 29., A ,third intermediatefg'roove "is 33. A belt 34 trained" about the intermediate pulley.36 andabouta pulley 3'! sec red tola fdrive shaftl38, fll ie shaft 38 may-bedriv' any suitable powerso'urce, such as the powertakefi of a tractor.qr th'elilre', which is'enlplo'yedgfor pulling the insecticidedistributing l apparatus over the fields or the' 111k ,wneretneveg apronis to betreated. .Itfyvill be -notedthat the ulley 3l.is;devoid ofbearings "Ihep'ulley assembly 3] serves the purpose ofespefedchangebetvveen theshaft 38and the drum' ll. In addition theretothepulley assembly '31 tends to 'move'laterally in response toth'epulling-forces 'applied to the belts and thereby serves to automaticallytighten the belts 29 and 34/ r p.

v puinp l l is driven-bytheshaft38 -andthis pump-is provided forthelpulrpo'se of withdrawing liquid fron' vvithin the II'. ,A pipeAldepends from the hollow. shaft 12 within-the drum andthe pipe 42 teminates, with an onhlqwer end adjacent the" cylindrical wall of thedrurn as shown in Fig. 3; The pipe 42 18 provided with a horizontalportion 43 which extend'sthroll l Phje hollow shaftl 2 to apfositionbeyond'the brackets .1 A T- pe ip tt n 5 c nn dt 1th P an a Piho e-. 16 ex ends efremgtn fitting 44 to a strainer 41. A hose orflexible conduit 48 extends from the outlet of the strainer 41 to theinlet sideofthe pump 41. The outlet or discharge side of the'pump isconnectedby a hose 49 to' a pipe f tting El as shownin'Fig. 1. Aconduitline 52 extends from the: fitting E5] to supply the insecticideto thee-prey nozzles. A valveit is provided in the line 52 to controlthe pressure of the liquid and the amountbeing forced throughth'e hoseline 52. r r

-The discha'rge hose line 52 may be connected to a header 1: as showninFQgs, 1 and 2 st) that the liquid insecticide under pressure maybe maybe supported by means of vertically adjustable arms 12 carried by theheader II. This header structure maybe mounted on the frame H] or anyother part of the vehicle for transporting the insecticide distributingmechanism.

A pressure gage 51 is provided for indicating the pressure on thedischarge side of the pump 4|. This gage 51 is in open communicationwith the pipe fitting 5|. A check valve 58 is connected with the pipefitting 5| by a short pipe 50 and this valve may be adjusted by means ofa screw '59 to open when a desired predetermined pressure is attained inthe pipe fitting 5 I. A-by-pass' conduit 6| connects the valve 58 to thefitting 44. Thus when the pressure in the discharge line 49 rises abovea predetermined value the valve 58 opens and permits some of the liquidto return to the suction side of the pump 4|.

The apparatus includes means for admitting air to the interior of .thedrum II and thereby maintaining atmospheric pressure within the rotatingsupply container. It is for this purposescribed by the agitating blades21. The pipe 8| is provided with a horizontal portion 82 which The upperend walls for the drum, a horizontally disposed stationary shaftextending through said drum and said end walls, a bearing attached toeach end wall surrounding the shaft supporting the drum for rotationabout the shaft, a paddle carried by the inner periphery of the drumprojecting generally radially inward therefrom and extending axially ofthe drum from a point adjacent one end wall and terminating short of thecenter of the drum, a second paddle carried by the inner periphery ofthe drum projecting generally radially inward therefrom and extendingfrom a point adjacent the other end wall and terminating short of thecenter of the drum, said shaft having open ends outside said bearings, awithdrawal pipe extending into said hollow, shaft through one open endthereof including a portion extending vertically downward from a centralportion of the hollow shaft between the paths of adjacent ends of saidpaddles and terminating adjacent the inner periphery of the means forrotating the drum, and means for is arranged within the hollow shaft l2and extends outside the drum through the shaft and terminates at 83.Thus as the liquid is withdrawn from the mixing drum air is admittedthrough the pipes 82 and 8| to maintain atmospheric pressure within therotating drum and thereby facilitating thewithdrawal of the liquid bythe pump 4|.

In operation the door 26 is opened and the insecticide materials aresupplied into the drum.

The door 26 is then closed ,so as to seal the periphery of the drum; Thedrive shaft 38 is then rotated to turn the drum and to thoroughly' mixthe insecticide materials with the liquid which is used as the carrierfor the insecticide. The shaft 38 drives the pump 4| and the suctiondeveloped thereby draws liquid through the pipe 42 and the horizontalportion ,43 thereof and the liquid moves through the strainer 41 and thehose 48. The liquid insecticide is discharged from the pump 4| throughthe conduit line 49 and the'hose line 52 to the header 1| and thespraying nozzles. The volume *of the'liquid discharged through the line52 may be controlled by adjusting the position of While the inventionhasbeen described with reference to specific structural features andwith regard to a particular combination of elements will be understoodthat changes may be made in the general organization and in the'part,

Such changes and others may be made without departing from the spiritand scope of the invention as set forth in the appended claims.

What I claim and desire to secure by Letters Patent is:

1. In apparatus for mixing an insecticide with V a liquid carrier andmaintaining such materials in an intermingled state during distribution,a horizontally disposed cylindrical shaped drum having an opening in theperiphery forreceiving an insecticide material and a liquid carriertherefor, means for closing and sealing said opening,

withdrawing the mixed liquid through said withdrawal pipe.

2. In apparatus for mixing an insecticide with a liquid carrier andmaintaining such materials in a mixed state while being withdrawn fordistribution, a horizontally disposed cylindrical shaped drum forreceiving an insecticide material and a liquid carrier therefor, endwalls for the drum, a horizontally disposed stationary shaft extendingthrough said drum and said end walls,

a bearing attached to each end wall surrounding the shaft supporting thedrum for rotation about said shaft, a paddle carried by the innerperiphery of the drum projecting generally radially inward therefromlocated adjacent one end wall and terminating short of the"center of thedrum, a second paddle carried by the inner periphery of the drumprojecting generally'radially inward therefrom located adjacent theother end wall and terminating short of the center of the drum, saidshaft having open ends outside said bearings, a withdrawal pipeextending into said hollow shaft through one open end thereof includinga portion extending vertically downward from a central portion of thehollow shaft between the paths of adjacent ends ofsaid paddles andterminating adjacent the inner periphery of the drum, an air admittingpipe in open communica- REFERENCES CITED The following references are ofrecord in the file of this patent: r

UNITED STATES PATENTS Number Name Date 588,136 Eyles 'Aug. 17, 18972,318,293 Cornell May 4, 1943 2,347,357 Mason Aprr25; 1944

